BACKGROUND:Ninjis first appeared in Super Mario Bros. 2. Since then they have not appeared in many other Mario adventures. This could be because they can be very rowdy and difficult to control (though in PM, they worked very cooperatively in Starborn Valley).
These small, dark creatures Prefer to live in areas with lots of room, they are most commonly found in plains, mountains or vast caverns. Used by Wart and Bowser for their speed and jumping capabilities, Ninjis can be very difficult to attack.

EVOLUTION:Ninjis have changed very little over time. The small dark blue creatures first appeared with two little red fangs. This look stuck in Super Mario World, though their colour changed to black.
In their latest appearance, Paper Mario, the teeth were apparently translated
into little cheek marks.